Machine for automatically cutting moving webs of paper or other materials into sheets



n 7 1927 Y 3 ,87 c w. E. MOLINS MACHINE FOR AUTOMATICALLY CUTTING MOVINGWEBS OF PAPER OR OTHER MATERIALS INTO SHEETS Filed Oct. 27, 1925 2Sheets-Sheet l Jun 7,1927. 1,631,879

MACHINE FOR AUTOMATICALLY CUTTING MOVING WEBS CE W. E. MOLINS 2Sheets-Sheet 2 PAPER OR OTHER MATERIALS INTO SHEETS wmwbi Patented June7, 1927.

UNITED STATES PATENT OFFICE.

WALTER EVERETT MOLINS, OF LONDON, ENGLAND.

MACHINE FOR AUTOMATICALLY CUTTING MOVING WEBS OF PAPER 03 OTHE B MA-TERIALS INTO SHEETS.

Application filed October 27, 1925, Serial No. 65,211, and in GreatBritain Decemberl, 1924.

This invention is for an improvement in or relating to a device forcutting strips from a travelling web of paper or like material and moreparticularly to a cutting device of the type which comprises a fixedblade and a movable blade, and has for its object the provision of aresilient deflector associated with the fixed blade which will ensurethat as the strips are cut from the Web, the leading edge thereof isdeflected away from the fixed blade of the cutters and cannot foul thesame in its path through the device.

When a web, for example, of paper is cut,

it tends to adhere. to the knives. The cut sheet separates easily fromthe moving blade, but it frequently happens that the freshly cut edge ofthe web meets the fixed blade, and the latter acting as a stop causesthe web to loop in front of the blade, or the cut end of the web mayfree itself and shoot up past the blade, causing interruptions in therunning of the machine.

The invention is particularly but not exclusively adapted for use withthe cutting mechanism described in the specification of my BritishPatent No. 190,202 wherein a fixed knife ismounted at a slight angle tothe web and is bowed to co-operate with a rotating knife.

The present invention consists of a device for cutting strips from atravelling web of paper or like material, Which comprises a fixed'blade,a movable blade adapted to cooperate therewith to effect a shearingaction upon the web of material fed through the space between theseparated blades, and a resilient deflector inclined to-the plane of thefixed blade in such a manner that the leading edge thereof is located inclose proximity to the edge of the fixed blade and in the path of themoving blade for the purpose set forth.

The invention is more particularly described with reference to theaccompanying drawings in which Fig. 1 is a sectional side elevation of acutting device constructed according to the present invention; and

Fig. 2 is a front elevation of the device illustrated in Fig. 1 lookingin the direction of the arrow A. 0

Referring to the drawings, the cuttmg mechanism is mounted in a housing1 supported by a cross bar 2 carried upon pillars bers 10 and 11 is afixed blade 12 secured to mounted in any desired manner upon the machmeupon which the device is used.

A travelling web 3 is fed to the cutting mechanism, from a reel,notshown, between a roller 4 and a rubber covered roller 5. The roller 5is carried upon a frame 6, which is adapted to swing in a horizontalplane about a pivot pin 7 so as to enable the roller 5 to be moved. outof. engagement with the roller 4 to permit the web 3 to be adjustedcorrectly in the device.

After the web has been correctly aligned, the roller 5 is moved intoposition and is adapted to clamp the web 3 against the roller 4. Theroller 4 is preferably carried in bearings 8 adapted to yield under the1pressure of the roller 5. This is obtained y mounting the bearings 8 inguides 9 and arranging a compression spring 10 to hold the roller 4 inengagement with the roller 5.

The roller 5 is driven through a pinion drive from the main drive of themachine in such a manner that the Web is fed to the cutting mechanism atthe desired speed. Mounted below the rollers 4 and 5 are a pair of guidemembers 10 and 11, which are adapted to ensure that the web is fed in avertical plane.

Situated directly below the guide memthe housing 1 so as to be movabletowards and away from the web fed in vertical plane which extendsbetween the guide members 10 and 11.

Adapted to co-operate with the fixed blade 12 is a movable blade 13,which is carried on a rotatable spindle 14 in such a manner that thecutting edge engages with the cutting edge of the fixed blade 12.

Mounted upon the guide member 10 is a' resilient deflector 15 which ismounted so as to extend towards the edge of the fixed blade 12 in such amanner that its leading edge is located in close proximity thereto andin the pathof the cutting edge ofthe movable blade 13.

The guide member 10 is shaped in such a manner that the leading edge ofthe deflector cannot move into the path of the movable blade13 above apredetermined distance, because it has been found that if the movementof the deflector is not restricted, the lead ing edge of the web isliable to curl round the same. In the same manner a stop member 15 isprovided to limit the movement 110 lip 19 and pass un er the freshprovided in advance of its cutting edge with a guard 17 which, as themoving blade ap-v proaches the fixed blade 12, 'initla-lly moves the weband the deflector 15 towards the fixed'blade, whereupon the moving bladeengages with the web and moves it together with the resilient deflector15 towards the fixed blade 12 so as to move the leading' edge of theresilient deflector 15 out of line with the leading edge of'the fixedblade 12 and enable a strip to be -cut from the web by means of themovable blade. The leading edge of the deflector is located so closelyto the fixed blade'that when it is moved by the fixed blade it-almostmakes a scraping contact with the surface of the fixed blade. As themoving blade passes over the fixed blade 12 the tongues 16 of the edgeof the resilient deflector 15 move towards the axis of the moving blade.13 and deflect the freshly cut edge of the web away from the edge ofthe blade 12 and into engagement witha guide member 18, which isconstructed of a radius of curvature slightly less than'the radius ofthe path of the cutting edge ofthe movable blade 13.

The tendency of the web is to cling to the guide member 18 and toobviate this there is mounted directly behind the cutting edge of themovable blade 13' a Ii 19 composed of a flexible material, such orexample as oil cloth, the purpose of which will be hereinafter moreparticularly. described.

Mounted directly in advance of the fixed blade 12 is a stripping plate20 which is provided with an arrow head located in close proximity tothe path of the movableblade 13, the point of the arrow being fixedapproximately in the path of the mid point of the cutting ed e of theblade 13. Due to the tendency o the Web of material to cling to thecylindrical guide member 18 the stripping plate 20 is ada ted to engagewith the y out edge of the web and deflect it in a vertical path awayfrom the guide member 18 of the cutting blade 13.

The strip which is cut from the cutting web is adapted to extenddownwardly through the bed of a conveyor and to be held in asubstantially vertical position in the path of one of the said conveyorsso as to enable a batch of cigarettes carried by the said conveyor to bewrapped and tucked therein.

Thus it will be seen that according to the present invention means areprovided whereby strips may be cut from a travelling web of paper orlike material so as to ensure that the leading edge of the web does notfoul one of the blades of the cutting mechanism and thereby interferewith the operation of the machine.

What I claim as m invention and desire to secure by Letters %atent is 1.A device for cutting strips from a travelling web of paper or likematerial which comprises a fixed blade, a movable blade adaptedto'co-operate therewith to effeet a shearing action upon the web fedthrough the space between the separated blades, and a resilientdeflector inclined to the plane of the fixed blade in such a manner thatthe leading edge thereof is located in close proximity to the edge ofthe fixed through the space between the separated blades, and aresilient deflector inclined to the plane of the fixed blade in such amanner that the leading edge-thereof is located in close proximity tothe edge of the fixed blade and in the path of the moving blade,

the leading edge of said resilient deflector being cut transversely toprovide a series. of tongues at the forward edge for the purpose setforth.

3. A device for cutting strips from a travelling web of paper or like'material which comprises a fixed blade, a movable blade adapted tocooperate therewith to effect a shearing action upon the. web fedthrough the space between the separated blades, and a resilientdeflector inclined to the plane of the fixed blade in such a manner thatthe leading edge thereof is located in close proximity to the edge ofthe fixed blade and in the path of the moving blade, and means forlimiting the movement of the leading edge of the said deflector.

In witness whereof I have hereunto set my hand.

W. E. MOLINS.

